Hi.

how to search a range of IP:s for their registed IP names?
Like nslookup or host for all IPs 130.xxx.xxx.1 to 130.xxx.xxx.254

//nicke

There is a DNS scanning utility that is often used by hackers or security folks that do a dnswalk or similar scan. Try this and let us know if it works for you!

http://sourceforge.net/projects/dnswalk/

hi.

well all DNS components for perl was not installed so it didnt work with dnswalk. however I asked a workingmate and he wrote a script in a few minutes...

#!/usr/bin/perl

use Socket;

# While sdtin
while(<>) {
	chomp($_);
	if($_ =~ /(\d+\.\d+\.\d+\.)(\d+)\s+(\d+)/) {
		for($2..$3) {
			$iaddr = inet_aton( "$1$_" );
			print "$1$_ = ".(gethostbyaddr($iaddr, AF_INET) or "hostname not found")."\n";
		}
	} elsif($_ =~ /(\d+\.\d+\.\d+\.\d+)/ ) { 
		$iaddr = inet_aton( $1 );
		print "$1 = ".(gethostbyaddr($iaddr, AF_INET) or "hostname not found")."\n";
	} else {
		print "Invalid ip\n";
	}
}